New piezoceramic films for high resolution medical imaging applications

Author

Levassort, F. ; Tran-Huu-Hue, L.P. ; Lethiecq, M. ; Bove, T. ; Wolny, W.

Author_Institution

LUSSI/GIP Ultrasons-EIVL, Blois, France

Volume

2

fYear

2000

fDate

36800

Firstpage

1125

Abstract

The fabrication process of new PZT-PNN piezoelectric ceramics (Ferroperm Pz21) is first described. Thick films are obtained through a tape casting route with a thickness between 60 and 90 μm. This material is designed essentially to be integrated in high frequency medical transducers where properties such as high permittivity and high coupling factor are required. The dielectric, elastic, piezoelectric and microstructure properties of this ceramic are characterized as a function of frequency and used to simulate the behavior of an imaging transducer operating around 30 MHz. The performance obtained shows that Pz21 ceramics are well adapted for high resolution medical imaging applications

Keywords

biomedical transducers; biomedical ultrasonics; casting; lead compounds; permittivity; piezoceramics; piezoelectric transducers; thick films; ultrasonic transducers; 30 MHz; Ferroperm Pz21; PZT-PNN piezoceramic thick film; PZT-PbNiNbO₃; PbZrO3TiO3-PbNiNbO3; coupling factor; dielectric properties; elastic properties; fabrication; high-frequency ultrasonic transducer; high-resolution medical imaging; microstructure; permittivity; piezoelectric properties; tape casting; Bioceramics; Biomedical imaging; Biomedical transducers; Fabrication; Frequency; Image resolution; Piezoelectric films; Piezoelectric materials; Piezoelectric transducers; Thick films;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2000 IEEE

Conference_Location

San Juan

ISSN

1051-0117

Print_ISBN

0-7803-6365-5

Type

conf

DOI

10.1109/ULTSYM.2000.921523

Filename

921523